Dust-allaying attachment for furnaces.



J W. HEID.

DUST ALLAYING ATTACHMENT FOR FURNACES.

APPLICATION FILED MAR-14, 1911.

Patented Oct. 17, 1911,

2 SHEETS-SHEET 1.

COLUMBIA PLANOGRAPH COvWASHINUTCIN. 11.x;

J. W. HEID.

DUST ALLAYING ATTACHMENT FOR FURNACES.

APPLICATION FILED MAR-14.1911.

L 1 T w m U 7 w a 2 M 1 or ll|l|vl|lll m N ma 0 E um Z M w 2 Z t I m U a 3 W P c Q J 5 1. A m .A A g A A H J Q H A 1 Q 7 Q m z T H \fl Ha J A g Q u 1 u. Q u: H o I 1 4 U .2 O 6 O 0 9 1 JOHN W. HEIID,- F JEFFERSON, WISCONSIN.

DUST-ALLAYING ATTACHMENT FOR FURNACES.

Specification of Letters Patent.

Patented 0013.17, 1911.

Application filed March 14, 1911. Serial No. 614,380.

To all whom it may concern:

Be it known that I, JOHN W. HEID, a citizen of the United States, and resident of Jefferson, in the county of Jefferson and State of Wisconsin, have invented certain new and useful Improvements in Dust- Allaying Attachments for Furnaces; and I do hereby declare that the following is a full, clear, and exact description thereof.

The object of my invention is to provide simple, economical and efficient dust-allaying attachments for furnace ash-pits, its essential features being the construction and arrangement of one or more valve-controlled apertured fluid pipes within the ash-pit just below the grate, whereby a fine horizontally disposed spray or sheet of water or moist steam is maintained under the grate incidental to a shaking operation, which spray commingles with the dust and falling ashes, whereby the same are precipitated. Thus the annoyance and unsanitary conditions caused by rising dust and ashes in buildings equipped with a heating plant are remedied.

lVith the above object in view my invention consists in certain peculiarities of construction and combination of parts as hereinafter particularly set forth with reference to the accompanying drawings and subsequently claimed.

In the drawings Figure 1 represents a sectional plan view of an ash-pit provided with a fluid pipe system for moistening ashes embodying the features of my invention, the system being illustrated in connection with a furnace having a circular grate, in which instance the branched spray pipes are, as shown, preferably circular or bowed to parallel the walls of the ash-pit snugly, whereby they are beyond the zone of falling ashes and will thus insure the entire volume thereof being treated; Fig. 2, a central sectional elevation of the same, the section being indicated by line 22 of Fig. 1; Fig. 3, a detailed sectional view of one of the spray pipe joints, whereby the spray pipe maybe adjusted in or out to slightly conform to varying diameters of circular ash-pits; Fig. 4:, a sectional plan view of a form of my invention showing the same applied to a furnace having a rectangular ash-pit, and Fig. 5, a detailed cross-section of the same partly broken away to illustrate an adjustable connection between the spraypipe and supply-pipe, whereby said spraypipe branches may be moved in or out to conform to different widths of furnaces.

Referring by characters to the drawings, Figs. 1 and 2, 1 represents a circular ashpit having the usual clean-out opening and an ash-door 2 therefor, the furnace being provided with the usual series of rocker grate-bars 8 above the ash-pit and the ends of the same suitably trunnioned. A liquid feed-pipe 4 is fitted through a rear aperture in the ash-pit wall, which feed-pipe extends around the furnace forwardly and is provided with a controlling-valve 5, which controlling-valve is accessible to the operator at this point. A T-pipe coupling 6 is-fitted to the end of the feed-pipe within the furnace having elbows 7 in threaded engagement with its cross-branch, which elbows are turned downwardly for the rdbeption of other elbows 8 having ends that are in screw threaded connection with spray-pipe branches 9. The end of each branoh-pipe is fitted into the mouth of the elbow 8 which elbow is provided with an annular flange 10, which flange is engaged by a gland 11 that is in threaded union with the mouth of the elbow whereby said branch may be horizontally adjusted, being capable of swing at this joint to position the same relative to the side-walls of the circular ashpit, it being understood that each branch is circular in form and arranged to parallel the ash-pit walls snugly so as to be beyond the grate Zone, whereby a clear field for the spray is offered and the liability of ashes to pile upon the pipes is eliminated. The pipes are provided with a series of perforations radiating toward the center of the ash pit, whereby a fine spray is discharged from the branch-pipes at either side just below the grate incidental to the ashes being released by a shaking operation. The ends of the branch-pipes 9 terminate adjacent to the side-walls of the ash-pit door opening, whereby access to the ash-pit is conveniently had withoutinterference by said branch-pipes, these ends of the branchpipes being provided with closure nipples 12, having vertically disposed stems 13 that are in telescopic union with their support-- ing feet 14:, the same being secured in their adjusted position by. suitable set-screws 143. Thus the ends of the branch-pipes are solidly supported and furthermore if it is desired to clean said branch-pipes out, these closing nipples 12 may be detached, whereby purpose.

In the operation it is apparent that prior 5 to a shaking operation the feed-pipe valve is 7 opened, whereby a thin sheet of water or other fluid is discharged under the grate and all of the ashes are thus forced to fall through said sheet, whereby moisture is com 10 mingled therewith to prevent the rise of dust or ashes incidental to the shaking operation. Thus this dust is prevented from rising in j -;the building either through defective fines or otherwise, it being understood that the moistened ashes can also be effectively removed from the ash-pit thereafter without the usual spreading of dust.

Figs. 3 and 4 illustrate a form of my invention to be used in connection with a fur- 0 nace having a rectangular ash-pit and grate.

In this instance the apertured spray branchpipes 15 are straight to conform to the walls '1' of said ash-pit, their outer ends being supported by feet similar to those illustrated in connection with the circular spray pipe branches. The T-coupling l in this instance, hag its cross-branch in direct teleiscopic union with rectangular terminals 15 of the branch-pipes, there being a gland 16 in threaded union with the mouths of the cross, whereby a water-tight joint is formed. Thus the branches may be adjusted laterally ljto accommodate different widths of. ash-pits. In this form of my invention I have shown a centrally disposed branch-pipe 17, which is directly in screw-threaded union with the T and provided with two series of spray aperl :tures oppositely disposed, which spray apertures are adapted to discharge and meet the spray apertures of the side branch-pipes, this form being particularly applicable to furnaces of great width so as to insure the .;sheet or spray being maintained across the full area of the grate, and while I have shown two forms, one of which has a pair of branch spray-pipes and the other an intermediate section, it is obvious that, in some the combination of a valve-controlled fluid feed-pipe extending into the ash-pit from {the rear and opposite its clean-out opening,

apertured branch pipes adjustably connecting to and projecting from the feed pipe, the ends of the branch pipes terminating adj acent tothe side edges of the ash-pit cleanout openings whereby a clear space is had for access to the ash-pit, and adjustable supporting legs for the ends of the spray-pipe.

2. In a furnace having a grate, an ash-pit thereunder provided with a clean-out openmg, and a door for the clean-out opening;

the combination of a valve-controlled fluid feed-pipe extending into the ash-pit from the rear and opposite its clean-out opening, a cross T in connection with the feed pipe within the ash-pit, apertured branches in adjustable union with the cross T, the ends of the branch pipes being terminated ad j acent to the side edges of the ash-pit cleanout opening whereby a clear space is had for access to said ash-pit, closure nipples for the aforesaid branch-pipe ends, and adjustable supporting legs extending from the closure nipples, the said branch pipes being shaped to conform to the contour of the ashpit walls adjacent to which they are nested ,to present a clear field for falling ashes.

In testimony that I claim the foregoing I have hereunto set my hand at Jefferson in the county of Jefierson and State of W'isconsin in the presence of two witnesses.

JOHN W. HEID.

Witnesses:

P. W. HIBBARD, W. S. HENRY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

- Washington, D. c. 

